In glycoproteins, to what three amino acids are carbohydrate groups most frequently linked? To what functional group is the glycan linked in each case?
In glycoproteins, to what three amino acids are carbohydrate groups most frequently linked? To what functional group is...
Glycoproteins and polypeptides that have carbohydrate groups added post-translationally, what is meant by the terms O-linked and N-linked? Where are these linkages likely to occur in human proteins?
In DNA, what carbohydrate group is bonded to each base? what functional groups are responsible for the basic properties of DNA bases?
In the linear polymers of amino acids, the 42 group of one amino acid is linked to the 43 group of another amino acid. 44 is the order in which the amino acids are covalently linked together through the peptide bond. The secondary (2) structure of proteins is the 45_ of the polypeptide chain backbone. C. Short Answer (12%)
“Amino acids used in making a polypeptide have an amino group and carboxyl group, and these groups can be present on any carbon atoms.” Is that a correct statement? Why so? What is the basis for classification of amino acids to non-polar (but not aromatic), polar, and two oppositely charged (at physiological pH) amino acids? Provide examples with their exact name, three letter and single letter codes.
What are functional groups in this molecule? H HN-C-COOH CH, sulfhydryl group ✓ carboxyl group ✓amino group methyl group
What are the protein amino acids modified during N-linked glycosylation? What are the steps involved in the addition of the en masse carbohydrate complex to a protein and its modification in the ER?
23. How many titratable functional groups do each of the following amino acids possess? a. isoleucine ______________ b. glutamic acid ______________ c. tyrosine ______________ d. lysine ______________
What about the pKa values of the R groups of the seven amino acids containing an ionizable R group? Tyr 10.5 Lys 10.5 Arg 12.5 Asp 3.9 Glu 4.1 His 6.0 Cys 8.4 Indicate the approximate net charge of each of these seven R groups at pH 7.4. Indicate the approximate net charge of each of these seven amino acids at pH 7.4. Note: remember the carboxyl and the alpha-amino group in addition to the ionizable (acidic or basic) R...
1) List the most common organic functional groups that function as acids or bases. Write an equation of each with Hal or NaOH to show their behavior as acids or bases. (You will also enter these functional groups in the table in Question 2.) 2) Fill in the following table showing the general solubility behavior of the organic acids and bases you listed above. Assume that they are not small enough to have significant water solubility. Type of Organic Compound...
Which amino acids of proteins usually participate in interaction with carbohydrate molecules? Name three of them.